property extension price idea

[getpooh]

Hi folks
My father has recently died and left me a sum of money in his will which I would like to spend on expanding my property. I will not have enough for this (mortgage for remainder) but roughly how much will it cost (guide breakdown) to build a side extension with gaurage and toilet downstairs, small second bathroom above then stairs to a loft room with a loft room which covers the existing and extension. Obviously it would therefore need a new roof.
FYI its a semi 3 bed in Loughton, Essex. Built in 1949 and worth about 275k.
The neighbours are ok with this. i am aware I need planning permission even with the law changes last week. Any idea how much that costs too.

thanks, any ideas appreciated

[The Builder]

Reasonable estimates on "stand alone" construction are difficult enough at a distance. However, the great unknown for me is how it should be linked to the existing.
Ground floor is probably obvious enough, even first floor is guessable from experience, but the battle is won or lost in the conversion of the existing roofspace. There are so many variables to take into account. So many questions to ask, all requiring inspection.
Standard practice is to get a few quotes, but even this would be difficult without some sort of drawings to work from.
This really does need a structural appraisal before any kind of meaningful price could be offered.
It all sounds perfectly possible, even quite straightforward, but I'm afraid you're asking too much without some kind of drawn scheme.

[bushbaby_de]

I can't help with the building costs but the planning application will be £150 plus the costs of putting the drawings etc together.

By the way the law didn't actually change last week, the government just announced an intention to consult on possible law changes. So you definitely will need planning permission.

[factor-fiction]

Is it possible to give a minimum figure though, TheBuilder? Maybe £25000 at lower end

[factor-fiction]

I think the upper end estimate could me much higher though.